Arch Linux

jdiez

Member

Registered: 2009-08-03

Posts: 40

Logitech QuickCam madness.

Hello, I've two webcams connected to my computer.

One of those is the built-in iSight, and the other one is a Logitech QuickCam Fusion. `ls /dev/ | grep video` actually reports two: video and video1. `lsusb` does also detect the webcam: "Bus 001 Device 002: 046d:08c1 Logitech Inc, QuickCam Fusion", but no luck at all.

But Cheese does only detect (and actually works) my iSight.

Any ideas?

EDIT!
dmesg says:

uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c1)
uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
uvcvideo: Failed to query (129) UVC probe control : -110 (exp. 26). 
uvcvideo: Failed to initialize the device (-5).
14:3:3: cannot set freq 1600 to ep 0x86

Last edited by jdiez (2009-09-12 13:46:15)

jspaces

Member

From: Canada

Registered: 2009-04-16

Posts: 21

Re: Logitech QuickCam madness.

The UVC driver site http://linux-uvc.berlios.de/ states the 046d:08c1 Logitech Quickcam Fusion has the following two issues.

1 First and second generation Logitech webcams suffer from firmware bug which make the camera somehow unstable.
As the issue is timing-related, the exact impact of the bug on a particular user can't be predicted.
If you plan to buy a Logitech webcam, consider getting one of the models not affected by the bug.
More information about the issue, including possible workarounds, are available on the QuickCam Team  website.

2 Starting at version 2.6.22, the Linux kernel includes a USB audio bug fix which triggers a (possibly identical to the above)
bug in first and second generation Logitech webcams. See the Linux UVC wiki for a workaround.

You may have some luck trying the workarounds listed on the Linux Quickcam Team web site http://www.quickcamteam.net/documentati … tibilities and the Linux UVC Wiki http://openfacts.berlios.de/index-en.ph … =Linux_UVC.

---

Knowledge is a beam of light in which humans can only see the reflection.

jdiez

Member

Registered: 2009-08-03

Posts: 40

Re: Logitech QuickCam madness.

Okay, now I can use my webcam with Cheese.

This is what I did: `rmmod uvcvideo ; modprobe uvcvideo trace=15`. Although, firefox/flash outputs weird lines and stuff. Any idea?

Bedtimes

Member

Registered: 2009-09-26

Posts: 33

Re: Logitech QuickCam madness.

Okay, now I can use my webcam with Cheese.

This is what I did: `rmmod uvcvideo ; modprobe uvcvideo trace=15`. Although, firefox/flash outputs weird lines and stuff. Any idea?

I'm at the same point. Did you manage to fix this?

edit; Seems to work hit n miss, depending on whether I've crashed it or not.

Last edited by Bedtimes (2009-10-07 00:37:08)